LARGE CAPACITY TRAVEL BACKPACK: This is a portable backpack for students or business people. It has 5 zippered compartments for added capacity, including pen slots, a key ring, 4 inside pockets, 2 side pockets and 1 back pocket. The padded center compartment can hold up to 17.3-inch laptops, including 15.6-inch, 14-inch and 13-inch macbooks.The main compartment of this roller backpack has a 45-liter capacity for carrying school books and laptops or packing travel clothes DURABLE MATERIAL: This rolling backpack is made of premium waterproof Oxford fabric that is both attractive and sturdy, with two-way YKK zippers. And there is a height-adjustable smooth aluminum hidden retractable handle with two sturdy, wear-resistant and silent rubber rollers for easy use on different surfaces. Equipped with an adjustable padded shoulder strap and with no mobile power USB, it brings convenience to your traveling TRAVEL COMPANION: This backpack with wheels is convenient for security c